Preparation and characterization of high-performance Pt-Ru/WO3/C anode catalysts for the oxidation of impure hydrogen

被引：0
作者：
Chen, KY [1 ]
Sun, Z [1 ]
Tseung, ACC [1 ]
机构：
[1] Univ Greenwich, Sch Chem & Life Sci, London SE18 6PF, England
来源：
ELECTROCHEMICAL AND SOLID STATE LETTERS | 2000年 / 3卷 / 01期
关键词：
D O I：
暂无
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The use of H-2 reduction instead of thermal decomposition of Pt-Ru/WO3/C catalyst precursor salts after freeze-drying resulted in significant improvement of the anodic oxidation of impure H-2. The electrode performance was 80 mA cm(-2) at 50 mV (80 degrees C, 0.5 M H2SO4) in H-2 containing 2% CO, and over 1600 mA cm(-2) in H-2 containing 100 ppm CO. Catalysts prepared by thermal decomposition of freeze-dried precursor salts had little activity for H-2 in a stream containing 2% CO. The use of CO stripping and electron microscopic examination showed that a higher surface area and greater number of Pt-Ru/WO3 interfaces are responsible for the improved performance. (C) 1999 The Electrochemical Society. S1099-0062(99)06-157-X. All rights reserved.
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页码：10 / 12
页数：3
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